Automatic telephone switch



March 24. 1925.

H. F. DOBBIN AUTOMATIC TELEPHONE SWITCH F11 d u e 16, 1922 mmv.

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l N nw Y A, W Q o 1 o .k n Q M .n mw wm w 0H n Y1, N nl ww Y @f h Q vh RQ Patented Mar. 24, 1925.

UNITED STATES PtTEhlvl" QFFCE.

HENRY F. DOBBIN, OF NEW YORK, 1l', Y., ASSIGNOR TO WESTERN ELECTBC COMPANY, INCORPORATED, OF NEW' YORK, N. Y., A CORPORATION OE NE'W YORK.

AUTOMATIC TELEPHONE S31/VIEUX.

Application filed June 16, 19.22.

To all whom t may concern.'

Be it known that I, HENRY F. Dessin, a citizen of the United States, residingat New York, in the county of New York, tate of New York, have inventedcertain new and. useful :improvements in Automatic Telephone Switches, ot which the following is a full, clear, concise, and enact description.

This invention relates to automatic telephone exchange switching apparatus and more particularly to the so-called coordinate switches of the type adapted for establishing connections in an automatic telephone er;- change system.

This invention is particularlj,7 adaptable to a switching system of the type disclosed in Fatent No. 1,515,735 issued November 1S, 1924 to Charles L. Goodrurn and John N. Reynolds, but it will be apparent to those skilled in the art that this invention may he applied equally well to perform other switching functions with tew changes in the operating circuit.

The object ot this invention is to provide an economical and improved torni of coordinate switch which will be simple., durable, and reliable in operation.

In accordance with the foregoing object the principal feature ot this invention resides in the provision of parallel banks or grids of passive conductors, together with a plurality ot active conductors arranged on supports and extending in opposite directions into operable relation with their associated grid conductors. V

Another feature is the provision of a selective mechanism in which each selective bar is common to pluralityv ot opposite rows of sets or" active contacts.

Other features o1" invention and advantages will appear from the following detailed description and by the claims appended hereto, reference being had to the accompanying drawing in which: 1 is a partial assembly view of said switch. llig. 2 is a sectional view of Fig. 1, showing a set of active contacts in ogerated position, and Fig. 3 is a plan sectional view ot Fig. 2.

T he multiple bank conductors comprising the wires, 1, 2, 3, 4e and 5, 6, 7, 8 ot Fig. 1 are securely fastened at their ends to an insulating support 9 which is held securely on traine 30 by means of a strip 31 and a number of screws such as 32 and 33. Supports 10 and 11 are of insulating material Serial No. 568,776.

and are disposed at right angles to the direction of the lengths othe grid conductors and on thein are mounted the {lenible wire contact springs 12, 13, 111, 15 and 16, 17, 18, 19, etc. The supports 10 and 11 mayv he ot considerable length and may carrj,7 on opposite sides any desired number of sets of contact springs 12, 13, 14e, 15 and 16, 17, 1S, 19, ctc., d ending upon the switch capacity desired. or sirnplicitT or" illustration, however, only two such sets are shown on each sine or support i1 in the side xiew oi 2. The tree ends of each set of Contact springs 12, 13,1-1, 15, and 16, 17, 18, 19 extend through apertures in tie member or card 20, 20 each of woich held seein-elli7 on the outer wires ot its associated set by means ot' bushings 21, 21 each fitting tightly its respective wire. rllhe carts 20, 20 are cach provided with an ariu 22 adapted to normally on the topmost conductor ot its associated set oi grid conductors, thus acting as a back stop for the active Contact wires, The said active contacts are norinafilf.'y tensicned downwardlj.T out of contact with the grid conductors. lilith each double vertical row ot sets of active contacts there is associated a vertical rota-table l which is providedk at one end with an armature 2a aged to be attracted h v an electroniagnet herebj.T the bar 23 is rotated out of its normal p isition in response to cach cner- ,gi/sation ci Vsaid elec'troinagnet. On each vertical bar 2?) there is prov d a number of resilient arms, 45, L'leac individual to a set ot contact springl lilith each set ot grid conductors 1, 2, el, etc., there is associated a horizontal r table har 2G, each ot which is provided with an armature 2T, and 'an electromagnet 28, whereby the bar is rotated from normal to oit-normal position. Each horizontal har is provided with a number of arms 29. Each ot these arms 29 is individually associated with a set oi active Contact wires, 12, 13, la, 15, and an arm 45, but it will be noted that normali;7 arms 29 are tree to move in a vertical path to one side of heir respectively associated resilient arms #115. rllhis is true, however, onli7 when arm "-5 associated with any arm 29 is in normal non-operated position as shown at 311, 1, wherein the arm 29 is shown in its oit-normal ineffective position. `When the vertical har L3 is rotated out of its norinal position by electroinagnet 25 the end SEL:

portions of arins 45 areanoved into op-V erable relatie-ii with their associated arins 29. Movement of bar 26 results in lifting the operating card 2O through the engagement or" the resilient arni by arni 29 so as to perp it the active cont-act wires l2, 13, la and l5 to engage the link conductors l, 2, 3 and 4 respectively. 'llie operated grid bar together with arin 29 thereon reinainin' their ott-normal position throughout the duration of the connection, but the vertical bars 23 may be immediately restored to nornial, whereuponl they may be immediately reoperated to coopera-tev with v,other horizontal y bars 26 to establish lother coexisting conne@ tions;y Y V What is claimed is: 1.7In a coordinate switch structure,

stationary supports, vsets ot acive yconductors arrangedjonsaid stationary supports,

andeiztending in opposite directions thereiroin, sets ot passive conductors arranged in engageable 'relation-'to saidiactive conductors, and ineans tor selectively operating said active contacts.

2. ln a coordinate switch structure, insulative supports, sets ciI active concluetors arranged on said supports and estende ing in different directions itlieretroni, sets ot passive conductors' associatedtherewith, a card iiidividualfito each lset ot said active contacts,I ineans for selecting a plurality ot' sets of said active contacts which extendl in 'ditlerent directions, and ineans for operating one ot said `selec-ted sets.

3. lira coordinate switch-structure, sets or" passive contacts, `sets ot active contacts associated with each vof saidr Vfirst-nien tioiied sets, a stationary support :tor said sets or" active contacts, aduplex selective inechanisni for said active contact-s, and means for establishing connections bef tween said'active and passive contacts.'v

-sive contacts, rows of setsyof active'contacts arranged on each ofsaid lstationary supports andl coordinate to the iiist-inentioned rows, an operating bar for-each rowof said passive contacts, .a selecting barl co-niinonto two opposite rows ot saidV active contacts, and nieans for operating said bars to effect interengageinent'between said active and passive contacts. m l y 6. ln a switching mechanism, `a plurality of stationary supports, rows otsetsot' pas-v sive contacts, rows oset-s ot'active contacts arranged dianietrically opposite' to` eachother on` each -of'said stationary supports and extending laterally into engageable-relation with said passive contacts, an operating card tor eaeli'set of said active conductors, and ineans tor selectively operating said-active` contacts.y

7. ln a switching mechanism, sets otnor# inally disengaged active and Apassive'contacts arrangedin coordinate rows, :in-operating v bar for each liorizon'talrow ot passive contacts, a selecting bar coninion to Va plurality oif' rows ot sets ot'said active contacts, and

ineens to operate' oneA set'of said active con-V acts as lresultot"inovenient,of said bars.-

ln a niultiple'coordinate' switch, sets ofnornially disengaged'activeand passive con-k tacts, ,arranged in coordinate rows, saidactive contacts being arranged inopposing rows, a duplex selective inechanisin therefor, r tienieniher for each set of said'active cone o eiilect-contact betweenllsaid active `and iassive contacts. attheir crossinnf point.-

9. A niultiple coordinateswitch compris"y ing rows o-sets otfpassivfe conductors, a

stationary'support, rows ot active conductors on said support vextending inV oppositedirec-Y tions 'thereti'oiii-1 into engageable: relation acts, andineansitor operating said Jineinber' with said `rows of passive conductors, andi ieans to selectively operate said' activefcon#` tacts., n

l0. ln a coordinate switch'struoture, iii-V sulative supports,sets of passive contacts, sets of active contacts arranged on said supports rand extending in dierentdirectionsthere troni, and coninion operating ineans for a ioo 1 plurality oitsa-id sets or' contacts adapted Ito Y be reoperated to establish" coe-nist'ing connections.v p

ln witness whereof, I hereunto'subscrihe iny naine thisltth'day of June; A. D. 1922.'

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